Color

#03373f

#03373f
hex#03373f
rgbrgb(3, 55, 63)
hslhsl(188, 91%, 13%)
oklchoklch(0.31 0.052 211)
Closest name: Elite Teal (#133337)Relative luminance 0.0311

Tints & shades

Every swatch is its own page — click any to analyze it.

Harmonies

Complementary

Open in tool →

#3f0b03

#033f29 · #03193f

#3f0337 · #373f03

Split-complementary

Open in tool →

#3f0319 · #3f2903

#29033f · #3f0b03 · #193f03

Contrast

#03373f as textRatioAAAA largeAAAFix
Aaon white
12.95:1passpasspassPasses AAA — no fix needed.
Aaon black
1.62:1failfailfail
  • AA: use #078092 as the text (4.51:1)
  • AAA: use #09a6be as the text (7.21:1)
  • AA: or shift the background to #999999 (4.54:1)
  • AAA: or shift the background to #bfbfbf (7.04:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #03373f as the background.

Brands using this color

No public brand in the corpus uses this exact color yet. Extract a brand to add one.

Fonts for this mood

#03373f reads as cool, vivid, dark. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #03373f
live endpoint

Point any MCP client at the shared colors endpoint and your agent gets the same engine as this page — generate_palette, check_contrast, analyze_color — read-only, no key. Every palette it proposes comes with a /palettes/new/… link: open it, lock what you like, paste the link back.

endpointhttps://mcp.brandsweets.com/colors/mcp
claude mcp add --transport http brandsweets-colors https://mcp.brandsweets.com/colors/mcp
try this prompt

analyze #03373f and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/03373f-a2b7be-df4e81-1f252d-e9f1ee?lock=0&style=vibrant

Want the agent to remember your picks and write them into a living brand? Create a free BrandSweets workspace.

Machine-readable: color.md